1. Vesting and release of restricted stock units ("RSUs") granted to the reporting person on March 15, 2017.

2. Vesting and release of RSUs granted to the reporting person on June 15, 2016.

3. Vesting and release of RSUs granted to the reporting person on June 15, 2017.

4. Vesting and release of RSUs granted to the reporting person on June 15, 2018.

5. Exempt transaction pursuant to Section 16b-3(e) - payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. All of the shares reported as disposed of on this Form 4 were relinquished by the Reporting Person and cancelled by the Issuer in exchange for the Issuer's agreement to pay federal and state tax withholding obligations of the Reporting Person resulting from the settlement of vested RSUs. The Reporting Person did not sell or otherwise dispose of any of the shares reported on this Form 4 for any reason other than to cover required taxes.

6. Each RSU represents a contingent right to receive 1 share of the Issuer's Common Stock upon settlement for no consideration.

7. The RSUs vested as to 1/8th of the total number of shares on March 15, 2017 and thereafter vested or will continue to vest as to 1/8th of the total number of RSUs in equal quarterly installments. Shares of the Issuer's common stock will be delivered to the Reporting Person following vesting.

8. The RSUs vested as to 1/16th of the total number of shares on June 15, 2016 and thereafter vested or will continue to vest as to 1/16th of the total number of RSUs in equal quarterly installments. Shares of the Issuer's common stock will be delivered to the Reporting Person following vesting.

9. The RSUs vested as to 1/16th of the total number of shares on June 15, 2017 and thereafter vested or will continue to vest as to 1/16th of the total number of RSUs in equal quarterly installments. Shares of the Issuer's common stock will be delivered to the Reporting Person following vesting.

10. The RSUs will vest as to 1/16th of the total number of shares on June 15, 2018 and thereafter will vest as to 1/16th of the total number of RSUs in equal quarterly installments. Shares of the Issuer's common stock will be delivered to the Reporting Person following vesting.

/s/ Jim Frankola by Jay Wedge, Attorney-in-Fact

12/18/2018

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).